<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title></title>
    <script src="jquery-3.2.1.js"></script>
</head>
<body>
    <div>
        <input id="input" type="text"/>
        <button id="btn">提交</button>
        <ul id="list">
        </ul>
    </div>
    <script>
        function Page(){
            
        }
        
        $.extend(Page.prototype,{
            init: function () {
                this.bindEvents()
            },
            bindEvents: function () {
                var btn=$('#btn');
                btn.on('click', $.proxy(this.handleBtnClick,this))
            },
            handleBtnClick: function () {
                var inputElem=$('#input');
                var inputValue=inputElem.val();
                var ulElem=$('#list');
                ulElem.append('<li>'+inputValue+'</li>')
                inputElem.val('')
            }
        })
        var page=new Page()
        page.init()
    </script>
</body>
</html>